Reuters: The ‘cloud’ of data that is becoming the heart of the internet is creating an all-too-real cloud of pollution as Facebook, Apple and others build data centers powered by coal, Greenpeace said in a new report to be released today. A Facebook facility being built in Oregon will rely on a utility whose main fuel is coal, while Apple is building a data warehouse in a North Carolina region that relies mostly on coal, the environmental organization said in the study. "The last thing …